android - ImageView quality -


i've finished app, tested on tablet, quality good, when try on smartphone (htc one) bad quality, wanna know why.

layour-normal:

<imageview     android:layout_width="210dp"     android:layout_height="90dp"     android:id="@+id/toplogo"     android:layout_margintop="5dp"     android:src="@drawable/logo_bleu_petit"     android:layout_alignparenttop="true"     android:layout_centerhorizontal="true" />

image-size: 250*107

enter image description here

enter image description here

you should put different images in different folders of drawable. example,put 250*107 image in /res/drawable-mdpi, , put 500*214 version of same image in /res/drawable-hdpi. app display different images on devices different screen size. if have 1 low-quality image in /res/drawable,when use device 1080p screen,the image might blown 2x or 4x.then looks in bad quality.

and 1 more thing,try not use fixed width or height on imageview.use scaletype imageview can perform better images of different size.


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